I have been trying to save a file for some boat cushions so I can send a cut file to my supplier and when I convert to dxf 2007 some of the parts vanish ? I’ve been here before and have checked many times for open curves and the explode polycurves check box and still getting the problem.
Do the curves “disappearing” on export select if you do a SelBadObjects? Bad objects do not get exported. If they are bad, try selecting them, Explode, then Join. That usually fixes bad curves.